While the ‘standard’ Raspberry Pi was never designed for industrial applications, the Raspberry Pi Foundation in April 2014 launched the compute module which was aimed at business and industrial users who wanted to move to a suitable hardware platform.
Mini-PCI verses Mini-PCIe: What is an expansion card? What is the difference between Mini-PCI and a Mini-PCIe cards?
NVMe Storage for Industrial Embedded Systems
Mini-PCIe HD video capture